Gonolobus leianthus Donn. Sm. Gonolobus leianthus Donn. Sm. in Bot. Gaz. 48: 296. 1909 sec. Juárez-Jaimes & al. 2007=Vincetoxicum schippii Standl. in Publ. Field Columbian Mus., Bot. Ser. 8(1): 37. 1930 syn. sec. The Plant List 2013